Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbe1d574d000de5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-12 03:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5af1e0ba414862b667c5a01a5a105b3 SHA-1: b2e54077887eaaa99f84c6e1d4883c79a843e772 SHA-256: 2dbe1d574d000de5aa960f878aafc5f64c37d401f6fc6d439b58a1679c7a4eac
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though obfuscated, contains text related to merging PDF files and includes the malicious URL. This suggests a social engineering lure to trick users into visiting a malicious site.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wb?keyword=merging%20pdf%20files%20offline
    • http://files.spinecarechiropractic.net/uploads/1/3/1/3/131384018/30437.pdf
    • http://files.azzaziel.net/uploads/1/3/2/6/132681456/3479732.pdf
    • http://files.thecopperdoors.com/uploads/1/3/2/6/132682790/4314745.pdf
    • http://files.ishaanshrivastava.com/uploads/1/3/1/3/131398322/4e76e4cc6079.pdf
    • http://files.civtechsolutions.com/uploads/1/3/1/4/131438583/1508149.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5071/files/68275939181.pdf
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/56677837688.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/94201514412.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7920/files/32611023633.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/66726610674.pdf
    • https://cdn.shopify.com/s/files/1/0437/8250/4600/files/solidworks_2016_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/87132814495.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/how_to_uninstall_microsoft_office_mac.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/16810608329.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5175/files/museo_sans_free_download_zip.pdf
    • https://cdn.shopify.com/s/files/1/0432/0447/7090/files/68767771927.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ce9.bin
e3d032e48d2a54a67e3cd80af9350a78ce552697849ef7ab0ce3c9f198a5115b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE9 5004 bytes
font_01_sfnt_off00007e0a.bin
a0c0758d61e8b37ab3b8b02c4db2464b28edbb891d9107c7876d39485107a330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0A 10292 bytes

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